Class YahtzeeUtil

java.lang.Object

YahtzeeUtil

public class YahtzeeUtil
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String[]	catNames Strings containing single-character category names
static boolean[][][]	idToRerollIdToFlags array where first index of roll id and second index of reroll id maps to boolean array with true values corresponding to indices of corresponding roll array that are to be rerolled
static int[][][]	idToRerollIdToIndices array where first index of roll id and second index of reroll id maps to int array listing indices of corresponding roll array that are to be rerolled
static int[][]	idToRoll integer array mapping roll id to int array with ascending sorted roll values
static int	NUM_CATEGORIES number of categories
static int	NUM_DICE number of dice
static int	NUM_RANKS number of ranks
static int	NUM_ROLLS number of unique sorted rolls of NUM_DICE dice with NUM_RANKS ranks
static double[][][]	rollRerollRollTransitionProbs array where first index of roll id and second index of reroll id and third index of next roll id maps to a probability of transitioning to next roll given roll and reroll action.
static int	UPPER_BONUS_LIMIT upper section bonus limit

Constructor Summary

Constructors

Constructor and Description
YahtzeeUtil()

Method Summary

Modifier and Type	Method and Description
static int	getNumRerolls(int[] roll) Return the total number of unique reroll actions for the given roll
static void	getRerollFlags(int rerollId, int[] roll, boolean[] reroll) Given rerollID and roll, write reroll booleans to given reroll array.
static double	getRollProb(int rollId, int numDice) Given a roll id and the given number of dice, return the probability of getting that roll when rolling that number of dice.
static void	main(java.lang.String[] args) Test method for YahtzeeUtil.java

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

catNames

public static final java.lang.String[] catNames

Strings containing single-character category names

NUM_CATEGORIES

public static final int NUM_CATEGORIES

number of categories

NUM_DICE

public static final int NUM_DICE

number of dice

See Also:

Constant Field Values

NUM_RANKS

public static final int NUM_RANKS

number of ranks

See Also:

Constant Field Values

UPPER_BONUS_LIMIT

public static final int UPPER_BONUS_LIMIT

upper section bonus limit

See Also:

Constant Field Values

NUM_ROLLS

public static final int NUM_ROLLS

number of unique sorted rolls of NUM_DICE dice with NUM_RANKS ranks

idToRoll

public static final int[][] idToRoll

integer array mapping roll id to int array with ascending sorted roll values

idToRerollIdToFlags

public static final boolean[][][] idToRerollIdToFlags

array where first index of roll id and second index of reroll id maps to boolean array with true values corresponding to indices of corresponding roll array that are to be rerolled

idToRerollIdToIndices

public static final int[][][] idToRerollIdToIndices

array where first index of roll id and second index of reroll id maps to int array listing indices of corresponding roll array that are to be rerolled

rollRerollRollTransitionProbs

public static final double[][][] rollRerollRollTransitionProbs

array where first index of roll id and second index of reroll id and third index of next roll id maps to a probability of transitioning to next roll given roll and reroll action.

Constructor Detail

YahtzeeUtil

public YahtzeeUtil()

Method Detail

getNumRerolls

public static int getNumRerolls(int[] roll)

Return the total number of unique reroll actions for the given roll

Parameters:

roll - ascending sorted roll values

Returns:

number of unique reroll ID numbers

getRerollFlags

public static void getRerollFlags(int rerollId,
                                  int[] roll,
                                  boolean[] reroll)

Given rerollID and roll, write reroll booleans to given reroll array.

Parameters:

rerollId - id number of reroll option

roll - ascending sorted dice roll

reroll - mutable "output" array to contain boolean value corresponding to whether or not same index in roll array is to be rerolled according to reroll ID.

getRollProb

public static double getRollProb(int rollId,
                                 int numDice)

Given a roll id and the given number of dice, return the probability of getting that roll when rolling that number of dice.

Parameters:

rollId - roll id number

numDice - the number of dice being rolled

Returns:

the probability of getting that roll when rolling that number of dice

main

public static void main(java.lang.String[] args)

Test method for YahtzeeUtil.java

Parameters:

args - (unused)